16504632433 has 4 divisors (see below), whose sum is σ = 16506558180. Its totient is φ = 16502706688.

The previous prime is 16504632401. The next prime is 16504632493. The reversal of 16504632433 is 33423640561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33423640561 = 541 ⋅61781221.

It can be written as a sum of positive squares in 2 ways, for example, as 11835916849 + 4668715584 = 108793^2 + 68328^2 .

It is a cyclic number.

It is not a de Polignac number, because 16504632433 - 2⁵ = 16504632401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16504632392 and 16504632401.

It is not an unprimeable number, because it can be changed into a prime (16504632493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 949960 + ... + 967177.

It is an arithmetic number, because the mean of its divisors is an integer number (4126639545).

Almost surely, 2^16504632433 is an apocalyptic number.

It is an amenable number.

16504632433 is a deficient number, since it is larger than the sum of its proper divisors (1925747).

16504632433 is an equidigital number, since it uses as much as digits as its factorization.

16504632433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925746.

The product of its (nonzero) digits is 155520, while the sum is 37.

The spelling of 16504632433 in words is "sixteen billion, five hundred four million, six hundred thirty-two thousand, four hundred thirty-three".